Correlations between changes in knee extension torque and the volume of the quadriceps femoris muscles after resistance training: A preliminary study of healthy individuals

DOI
  • Koami Nobuhiko
    Division of Rehabilitation Medicine, Eastern Chiba Medical Center, 3-6-2 Okayamadai, Togane-shi, Chiba 283-8686, Japan
  • Watanabe Atsuya
    Department of Orthopedic Surgery, Eastern Chiba Medical Center.
  • Nakajima Takayuki
    Department of Orthopedic Surgery, Eastern Chiba Medical Center.
  • Mori Atsushi
    Division of Rehabilitation Medicine, Eastern Chiba Medical Center, 3-6-2 Okayamadai, Togane-shi, Chiba 283-8686, Japan
  • Nakashima Go
    Division of Rehabilitation Medicine, Eastern Chiba Medical Center, 3-6-2 Okayamadai, Togane-shi, Chiba 283-8686, Japan
  • Jones Atsushi
    Division of Rehabilitation Medicine, Eastern Chiba Medical Center, 3-6-2 Okayamadai, Togane-shi, Chiba 283-8686, Japan
  • Yusuke Saito
    Division of Rehabilitation Medicine, Eastern Chiba Medical Center, 3-6-2 Okayamadai, Togane-shi, Chiba 283-8686, Japan
  • Maetani Yusuke
    Division of Rehabilitation Medicine, Eastern Chiba Medical Center, 3-6-2 Okayamadai, Togane-shi, Chiba 283-8686, Japan
  • Ono Wakana
    Division of Rehabilitation Medicine, Eastern Chiba Medical Center, 3-6-2 Okayamadai, Togane-shi, Chiba 283-8686, Japan
  • Takahashi Noriko
    Division of Rehabilitation Medicine, Eastern Chiba Medical Center, 3-6-2 Okayamadai, Togane-shi, Chiba 283-8686, Japan
  • Sakai Takayuki
    Division of Radiology, Eastern Chiba Medical Center.
  • Nose Kiichi
    Division of Radiology, Eastern Chiba Medical Center.
  • Ochi Shigehiro
    Division of Radiology, Eastern Chiba Medical Center.
  • Aoki Yasuchika
    Department of Orthopedic Surgery, Eastern Chiba Medical Center.

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Other Title
  • 大腿四頭筋のレジスタンストレーニング前後における膝関節伸展発揮トルク変化と筋体積変化の相関
  • 健常者における予備的研究

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Abstract

<p>The purpose of this study was to investigate the correlation between the muscle volume, measured with 3-dimensional magnetic resonance imaging (MRI), and the strength of the quadriceps femoris, measured with an isokinetic dynamometer, in healthy subjects. Twelve lower extremities of 6 healthy volunteers (3 males and 3 females, mean age ± SD 28.8 ± 5.9 years) were included. An exercise program to strengthen the quadriceps femoris using an exercise band was performed for 8 weeks. Quadriceps femoris muscle volume and knee extension torque were measured after the 8-week training. Knee extension torque and volume of the quadriceps femoris significantly increased after the 8-week training compared to their baseline values (p<0.001).There was a significant positive correlation between the amount of change in muscle volume and knee extension torque (r=0.64, p=0.02). Muscle volume measurement with MRI may be useful for monitoring knee extension torque changes, resulting from muscle strengthening exercises, of patients who cannot perform conventional muscle strength tests.</p>

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